So Sorry to hear of your pups bad luck with thier first homes.
Some people when purchasing this breed really do not read or understand the dog personality they are taking in. It is best that your babies get re-odopted by someone/family that can really appreciate them.
For example- my Star(blk/wht female- who I rescued)had a horrific beggining as a puppy….she was first purchased by a family that had 3 small toddler children and the father came from the oldschool of beating the dog for missbehaving...well you can image what happened to her personality...she became very agressive and was constantly kenneled by this family and they were going to put her down- but my dog trainer/sitter rescued her from this family and her death
(and had even recommended to this family in the first place - that a basenji really is not a dog for their type of family-with such young/small kids)-
and she worked with reconditioning Star and rebuilt up her trust in people(kids & men) again...
and then she found me on Nov2002- when I was boarding my Basenji(Spike-red/wht male) and my Angus(a boarder collie/lab) for Thanksgiving that year-
I fell in love with her - or she actually fell in love with me- she practically jumped into my amrs when meeting her for the first time - which my dog trainer/sitter stated was highly unsual for the breed.
She is my snuggle girl, very loving & sweet(even though at time can be an Alpha-B at times).....
I just wished I had gotten her in the very beginning so that this other family had not given her such an awful start as a young puppy. But she has been a very good girl for me and I give her a good life now...she is now treated as the pampered little princes she think she is ; ) she's my little snuggle girl at night in bed with me...and I would be lost without her.
She still does not like men or small children that much and her hackles still raise in anticipation- but she is very good and does not get aggressive- but I do keep a very short leash on her and ask people not to pet her- because I just don't know how she'd react to strangers and I do not want an incident of her bitting. She has been the best dog I could have in a Basenji breed...along with my Spike(who passed on at age 12 in 2010...still very much missed).
These dogs are very unique and special and need very unique/special owners...they are not the regular run of the mill type dog...and need good homes with proper understanding of the breeds temperment/personality and be able to give the right kind of care & training - positive re-inforcement/bribes; ) work best in getting a loved basenji to do better in training ; ) at least it's worked with my Star & Spike.
I cant imagine owning any other type of breed. Hope your babies have good homes & the love they deserve- BIG HUGS to your puppies & you!